Perhaps you should try some spelling variations:
bulgareiae » bulgariae, bulgarie, bulgaricae, bulgareeiae, vulgareiae, bulgereiae
bulgarian » hungarian, bulgareian, vulgarian, bulgerian
vulgarische » bulgarische, bulgarischen, ungarische
bulgarischer » bulgarischen, bulgarische, bulgarisch, bulgareischer, vulgarischer, bulgerischer
bulgeria » bulweria, bulgarica, bulgariae
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((bulgareiae OR bulgarian) OR ((vulgarische OR bulgarischer) OR (bulgaria OR bulgeria))) OR (bulgar OR bulge)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgareiae or bulgarian) or ((vulgarische OR bulgarischer) or (bulgaria or bulgeria))) or (bulgar or bulge))".
• Adding a wildcard symbol may retrieve word variants: (((bulgareiae or bulgarian) or ((vulgarische OR bulgarischer) or (bulgaria or bulgeria))) or (bulgar or bulge))*.